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Cushion|Lab Grown|IGI

1.00ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG823691753

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG823691753

Diamond specifications and retailer prices

From £105 GBP
As of November 6, 2026
Save £869 GBP (89%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £973 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG823691753 or 823691753. Listed at 9 retailers as of November 5, 2026, with prices from £105 to £973, a £869 spread on the same certified stone. MOH London lists it at £973. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823691753
Dimensions5.80 × 5.74 × 3.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.80 mm5.74 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823691753
Side View
Table 71.0%Crown 35.8°Girdle: STK-THKPavilion 38.1°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £973 GBP|Low: £105 GBP|High: £988 GBP|Avg: £379 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£105 GBP
Retailer 6£158 GBP
Retailer 2£192 GBP
Retailer 3£222 GBP
Retailer 5£229 GBP
Retailer 4£385 GBP
Retailer 7£418 GBP
Retailer 9£716 GBP
MOH London£973 GBP

41 data points across 9 retailers

9 retailers£105 GBP to £973 GBP

A
Cheapest Retailer
-
£105 GBP
Final sale: no returns
B+
Retailer 2
-
£158 GBP
View
A
Retailer 3
-
£192 GBP
View
A
Retailer 4
-
£222 GBP
View
A
Retailer 5
-
£229 GBP
View
B+
Retailer 6
-
£385 GBP
View
B
Retailer 7
-
£418 GBP
View
B
Retailer 8
-
£716 GBP
View
Most Expensive
B
MOH London
LG823691753 · Nov 5
£973 GBP
View
8 more retailers have this diamond
Prices start from £105 GBPSave up to £869 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.00ct Cushion
£105 GBP